Omit target language that the student has to complete while progressing through the game. For lower levels it is better for the teacher to select language items to be omitted that are familiar. For higher levels the student may be able to guess meaning from the context of the game.
Example: (from the MOTAS walkthrough)
Look under the pillow to find the _1._ and take the _2._ from the wall Use the _1._ to open the _3._ . You will find a _4._ in the _5._Missing words: locker, screwdriver, key, box, poster,